| 口器 | kǒu qì | mouthparts (of animal or insect) |
| 口子 | kǒu zi | a hole; an opening; a cut; a gap; a gash |
| 裂口 | liè kǒu | breach; split; rift; vent (volcanic crater) |
| 领口 | lǐng kǒu | collar; neckband; neckline |
| 营口 | Yíng kǒu | Yingkou prefecture level city in Liaoning province 辽宁省 in northeast China |
| 胃口 | wèi kǒu | appetite |
| 随口 | suí kǒu | to speak thoughtlessly (or casually); to blurt out what's on one's mind |
| 口实 | kǒu shí | food; salary (old); a pretext; a cause for gossip |
| 口音 | kǒu yīn | oral speech sounds (linguistics) |
| 口音 | kǒu yin | voice; accent |
| 路口 | lù kǒu | crossing; intersection (of roads) |
| 枪口 | qiāng kǒu | muzzle of a gun; at gunpoint |
| 改口 | gǎi kǒu | to correct oneself; to withdraw or modify one's previous remark |
| 气口 | qì kǒu | location on wrist over the radial artery where pulse is taken in traditional Chinese medicine |
| 袖口 | xiù kǒu | cuff |
| 口口声声 | kǒu kou shēng shēng | to keep on saying (idiom); to repeat over and over again |
| 口角 | kǒu jiǎo | corner of the mouth |
| 口角 | kǒu jué | altercation; wrangle; angry argument |
| 张家口 | Zhāng jiā kǒu | Zhangjiakou prefecture level city in Hebei |
| 总人口 | zǒng rén kǒu | total population |
| 封口 | fēng kǒu | to close up; to heal (of wound) |
| 对口 | duì kǒu | (of two performers) to speak or sing alternately; to be fit for the purposes of a job or task; (of food) to suit sb's taste |
| 破口 | pò kǒu | tear or rupture; to have a tear (e.g. in one's clothes); without restraint (e.g. of swearing) |
| 决口 | jué kǒu | be breached; burst |
| 十字路口 | shí zì lù kǒu | crossroads; intersection |
| 糊口 | hú kǒu | to scrape a meager living; to get by with difficulty |
| 口罩 | kǒu zhào | mask (surgical etc) |
| 对口相声 | duì kǒu xiàng shēng | comic cross talk; formalized comic dialog between two stand-up comics: leading role 逗哏 and fall-guy 捧哏 |
| 亲口 | qīn kǒu | one's own mouth; fig. in one's own words; to say sth personally |
| 口述 | kǒu shù | to dictate; to recount orally |
| 收口 | shōu kǒu | to cast off (in knitting); to sew a finishing hem; to close up (of wound); to heal |
| 口服 | kǒu fú | oral (administered by mouth); to profess conviction; to say that one is convinced |
| 心口 | xīn kǒu | pit of the stomach; solar plexus; words and thoughts |
| 异口同声 | yì kǒu tóng shēng | different mouths, same voice; to speak in unison (idiom) |
| 口头语 | kǒu tóu yǔ | pet phrase; regularly used expression; manner of speaking |
| 顺口 | shùn kǒu | to read smoothly (of text); to blurt out (without thinking); to suit one's taste (of food) |
| 口语 | kǒu yǔ | colloquial speech; spoken language; vernacular language; slander; gossip; CL:门 |
| 住口 | zhù kǒu | shut up; shut your mouth; stop talking |
| 目瞪口呆 | mù dèng kǒu dāi | dumbstruck (idiom); stupefied; stunned |
| 创口 | chuāng kǒu | a wound; a cut |
| 敞口 | chǎng kǒu | open-mouthed (jar etc); (of speech) freely; exposure (finance) |
| 湖口 | Hú kǒu | Hukou county in Jiujiang 九江, Jiangxi; Hukou township in Hsinchu county 新竹县, northwest Taiwan |
| 爽口 | shuǎng kǒu | fresh and tasty |
| 白口铁 | bái kǒu tiě | white iron |
| 脍炙人口 | kuài zhì rén kǒu | appealing to the masses; universally appreciated (idiom) |
| 口技 | kǒu jì | beat boxing; vocal mimicry; ventriloquism |
| 口渴 | kǒu kě | thirsty |
| 口舌 | kǒu shé | dispute or misunderstanding caused by gossip; to talk sb round |
| 浦口 | Pǔ kǒu | Pukou district of Nanjing City 南京市 in Jiangsu 江苏 |
| 破口大骂 | pò kǒu dà mà | to abuse roundly |
